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The Australian concept car "aXcessaustralia II" is a serial hybrid car of the so-called "New Generation Hybrids." Its internal combustion engine drives an electrical power generator. The wheels are driven by the electrical traction motor only, which receives its energy from a combination of batteries, capacitors and the electrical power generator. In a drivetrain, which consists of a combustion engine, a generator, a traction motor, two different systems for electrical energy storage and the necessary electronics to apply the most fuel efficient power strategy, all components require an extremely high degree of weight optimization to avoid offsetting the fuel savings achieved with the system by an increased overall vehicle weight. They also need to be extremely efficient in themselves.